Expert (EX) Stages
As you accumulate S-Ranks during your playthrough of thus game, you will start unlocking special EX stages at various points. You will obtain your first 3 EX stages after you S rank 12 normal stages. These stages contain rarer, stronger Pokemon to catch and follow different rules than the main stages. (Defeat the Pokemon in a certain time limit.) You can access these stages by tapping "Extra" on the lower left side of the touch screen. Tap "Main" to return to the normal stage select screen.
Note: Earning S-Ranks on the EX stages or SP stages will not count towards your overall total.